/Engine/Plugins/Enterprise/DatasmithCADImporter/Source/CADInterfaces/Public/CADSceneGraph.h
This class save the override data of an occurrence. Indeed, some tools/formats allows to override some occurrences of the instances of a reference (e.g. only the 4th occurrence of C is hidden in the graph below) A
class FArchiveOverrideOccurrence : public [CADLibrary::FArchiveWithOverridenChildren](API\Plugins\CADInterfaces\FArchiveWithOverridenChildren)